User Manual - Page 534

For 2019 Wrangler.

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532 TECHNICAL SPECIFICATIONS
Reformulated Gasoline
Many areas of the country require the use of cleaner burning
gasoline referred to as “Reformulated Gasoline”. Reformu-
lated gasoline contains oxygenates and are specifically
b
lended
to reduce vehicle emissions and improve air quality.
The use of reformulated gasoline is recommended. Properly
b
l
ended
reformulated gasoline will provide improved
performance and durability of engine and fuel system
components.
Materials Added To Fuel
Besides using unleaded gasoline with the proper octane
rating, gasolines that contain detergents, corrosion and
stability additives are recommended. Using gasolines that
have these additives will help improve fuel economy, reduce
emissions, and maintain vehicle performance.
Designated TOP TIER Detergent Gasoline contains a
higher level of detergents to further aide in mini-
mizing engine and fuel system deposits. When avail-
able, the usage of TOP TIER Detergent gasoline is
r
ecommen
ded. Visit www.toptiergas.com for a list of TOP
TIER Detergent Gasoline Retailers.
Indiscriminate use of fuel system cleaning agents should be
a
voided.
Many of these materials intended for gum and
varnish removal may contain active solvents or similar
ingredients. These can harm fuel system gasket and
diaphragm materials.
Gasoline/Oxygenate Blends
Some fuel suppliers blend unleaded gasoline with oxygen-
ates such as ethanol.
Problems that result from using gasoline containing more
t
han 15%
ethanol (E-15) or gasoline containing methanol are
not the responsibility of the manufacturer and may void or
not be covered under New Vehicle Limited Warranty.
CAUTION!
DO NOT use E-85, gasoline containing methanol, or
gasoline
containing more than 15% ethanol (E-15). Use of
these blends may result in starting and drivability
problems, damage critical fuel system components, cause
emissions to exceed the applicable standard, and/or cause
the Malfunction Indicator Light to illuminate. Please
observe pump labels as they should clearly communicate
if a fuel contains greater than 15% ethanol (E-15).
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